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Lexus SC400 Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Lexus SC400 has a rough idle?

While there are a variety of reasons your Lexus SC400 has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

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